Dr. Greg St. John, an interventional cardiologist, has joined Hot Springs Cardiology Associates. He is board certified in internal medicine and cardiovascular diseases and is a Fellow of the American College of Cardiology. A native Arkansan, St. John is a graduate of the University of Arkansas for Medical Sciences in Little Rock, where he also completed his internship, residency and fellowship.

Community Health Systems Inc., which operates hospitals in Fort Smith, Bentonville, Springdale and seven other cities in Arkansas, on Monday blamed Chinese hackers for a cyberattack that accessed "non-medical" data on 4.5 million patients of its affiliated physicians.